男の娘へ調教されました

Arima Hikaru, a student, has such a feminine face that his older sister, Arima Mami, always teases him, saying he looks like a woman.
He got so worried about being told this so often that one day when his sister Mami was out he sneaked into her room and dressed up in women's clothes.
However, Mami found out about this, and from that day on, Hikaru's life changed completely.

First, while cross-dressed on the train, he was molested and ejaculated, and then his classmate and best friend, Kakegawa Akira, who witnessed him cross-dressing, forced him to perform a fellatio. His sister abuses him every day, giving him handjobs and anal play while riding on his face. To top it all off, he is made to walk around town while cross-dressing with a vibrator inserted in his anus, and in a park to invite a middle-aged stranger to rape him.